Initial microservices setup from artifacts

gateway/requirements.txt

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+fastapi==0.104.1
+uvicorn[standard]==0.24.0
+httpx==0.25.2
+redis==5.0.1
+pydantic==2.5.0
+pydantic-settings==2.1.0
+python-jose[cryptography]==3.3.0
+python-multipart==0.0.6
+prometheus-client==0.17.1
+python-json-logger==2.0.4
+email-validator==2.0.0
+aio-pika==9.3.0
+pytz==2023.3